Transmission lining



F. B. MclLROY.

TRANSMISSION LmlN. APPLICTION FILED JAN. 23, |920.

1,406,049, i Patented Fem, 1922.

2 SHEETS-SHEET l.

F. B. MCILROY. .TRANSMISSION LINING.

APPLICATION FlLD JAN.23. 1920.

Patented Feb. 7, 192.2.

2 SHEETS-SHEET 2.

B. IOILROY, F HAMIOND, INDIANA 'rmsmssron anima.A o

4Specication ot Letters Patent.

Patented Feb. 7, 1922.

appimuon aies January as, i920. serial 11. stasi?.y

To all whom it may concern I' Be it known that FRANCIS B. MoILRoY, a

, ings,

- sion lining comprisin citizen of the.`United States, residin at Hammond, in the county of Lake and tate of Indiana, has invented certain new and useful Improvements in Transmission Linof which the following isA a .specification, reference being had therein to the accom anying drawing.

T e invention relates to liningsy for transmission brake bands and the like, and vhas for its object to providecharacter comprising a strip of material having adhesively, joined thereto alternate inserts of different material, said material bein preferably cork and fabric.

further object is to provide a transmising adhesively secure thereto alternate rectangular shaped inserts of cork and fabric.

A furtherobject is to form said transmission linings"l by adhesively securing to a sheet of material stripsthe sheet at an an le to the strips of material so as to form rake band linings.

With the above and other ob'ects in view i the invention resides in the com ination and "arrangement of parts as hereinafter set forth, shown` in the drawings described and claimed, it being understood that changes in the precise embodiment of the invention ma be made within the scope of what is claimed without departing from the spirit of the invention.

Fi rel is a plan view of a sheet of materia formed from strips adhesively joined to a single sheet of material.

Figure.2 is a view in perspective of the sheets as shown in Figure 1, parts being broken away to show the adhesive and soli sheet.

Figure 3 is a perspective of a transmission brake band lining. I

Figure 4 is a sectional view taken on line 4-4 of Figure 3;

Figure 5 is a sectional view 5f5 of Figure 3.

Figure 6 isa sectional view taken on line 6-6 of Figure 3.

Referring to the drawings, the numeral 1 designates asheet of fabric preferably canvas, to 4which fabric is joined alternate strips 2 and 3 of cork and fabric by an adhesive 4. Adhesive 4 is preferably a ce1- luloid cement made by dissolving celluloid taken on line linings of this o a strip of fabric hav-v of material, then severingl in acetone and adding gum' camphor 'as a preventative against souring. It has been found that by raising the camphor content of the celluloid, that the cement so formed is water proof and to a great extent impervious to heat, acid or oil. However, it is to be understood that any form of adhesive mail be emplo ed.

he sheets aving been formed as shown in Figures 1 and 2 they are vsevered transversely joined strips as shown by the dotted lines 5 in Figure 1, thereby forming transmission brake lining 6, as shown in Figure 3. Each brake lining when so formed will comprise a fabric band 7 to which is adhesively joined alternate rectangular shaped inserts -8- and 9 of cork and fabric, thereby providing a brake lining for ytransmissions wherein the cork will provide and have the highest coeiiicient of friction and at the same time the cork is not materially affected-b either excessive lubrication or lack of 1t and `posesses very desirable wearing qualities, by providing rectangular shaped inserts of. cork the disadvantage of roviding a solid sheet with cork inserts is o viated', said disadvantage being that corks are too brittle to be used with any great degree of success. When applied to a transmission brake band the cork works alone atlow or medium ressure as its..

frictional coeicient is high an at high pressures thefabric inserts also become tightly engaged, therefore the excellent wearing qualities of the combined surfaces. By providing a, relatively large proportion of one of the contacting surfaces formed from cork cuttin will be prevented, no matter whether there is lubricant present or not. By forming the liningsA by cuttin sheets transversely after the strips o material have been adhesively secured thereto, it will be seen that'considerable time is saved in forming the lining. It will also be seen that by so forming the linin that the inserts of -cork will be securel acked up by the fabric strip 7 thereb ho ding the inserts of cork andfabric in a ignedl positions. It will also be seen that by so forming the linn that the transverse edges of the cork vand abr-ic inserts 8 and 9 when the lining is shown in a circle as formed in Figure 3, the inserts will be forced into tight engagement with each other, thereby preventing the fracturing of the cork inserts adjacent their transverse edges.

at right angles to the adhesively` Il the viio The invention havin been set forth what serts being of substantiallythe same ,width f l is claimed f'as new- .an useful is:- v as the strip of fabric, said inserts havsif'fj. 1. A'brake lining comprising a strip of their engaging edges transversely dispo material having secured thereto alternate 4. A rake lining comprisin a stip@- of l20 5 inserts of different materials extending enfabric having adheslvely secure thereto lentrely across the strip. Y gaging inserts of cork and fabric, said inv- 2'. A brake linin vcom rising a strip of sertsbeing rectan lar in shape'and havinmaterial having va esive secured thereto their engaging e ges transversely dispose inserts of different materia s,`said inserts be- 5. A brake lining comprisin a strip ofv25 i 1o ing of substantiallyv the same width as the fabric having adhesively secure thereto irlstr1 of material, said insertsghave their Aenserts of cork and fabric, said inserts being s gagmg edges vextending transversely of the rectangular in shape and of substantially the 'strip of material. i same width as the strip ofv fabric. 3. A brake lining comprisin va,v strip of' In testimonyl whereof I hereunto aix'my 30' 115v fabric having adhesively secur thereto ensignature.

-gaging inserts of fabric and cork, said in- FRANCIS B. MCILROY. y 

